Liquid-fuel burner.



PATENTED JAN. 20, 1903.

D. H. MOSTELLBR. LIQUID FUEL BURNER.

APPLICATION FILED JULY 26, 1902.

H0 MODEL.

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Unrrhn STATES ATENT OFFICE.

DOSIER H. MOSTELLER, OF SAN FRANCISCO, CALIFORNIA.

LIQUID-FUEL BU RN ER.

SEESIFIGATION forming part of Letters Patent N 0. 718,859, dated January 20, 1903.

Application filed July 26, 1902. Serial No. 117,152. (No model.)

To all whom it may concern:

Be it known that I, DOSIER H. MOSTELLER, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Liquid Fuel Burners; and I do hereby declare the following to be a full, clear, and exact description of the same.

This invention relates to a fuel-oil burner. Difficulties are experienced in this class of devices relating to one or other of two equally undesirable conditions resulting from the use of fuel-oil. The first of these is the intense local heat generated by fuel-oil as heretofore employed and which destroys very rapidly the furnaces or fire-boxes in which it is employed. The localization of heat is so intense as to make it unsuitable for many purposes. In endeavoring to overcome this defect or difficulty the second difficulty is encountered namely, incomplete combustion and consequent formation and deposit of unconsumed carbon in the form of soot. The first of these undesirable conditions is brought about by the usual method of vaporizing the liquid fuel in connection with and by means of rapid streams of air, steam, and the like. The second difficulty is due to an insufficient supply of oxygen at the point of combustion.

The object of the present invention is to overcome the stated difficulties and to provide a simple, cheap, durable, and efficient oil-burner adapted to be used in stoves, furnaces, combustion-chambers, or any other places where fuel is employed for the production of heat. These objects are accomplished by means of the devices illustrated in the accompanying drawing, which is a sectional elevation.

Referring to this drawing, 1 is a vaporizer formed, preferably, in the shape of a reducerelbow-that is, an elbow having one of its entrances or apertures larger than the other. In the form in which this invention is here illustrated and which is adapted for akitchenrange this vaporizer or elbow is preferably provided with a length of pipe 2, forming an extension to the exterior of the range and in communication with the outer air. In the outer bend or back wall of the elbow is a slit, out, or aperture 3.

Surrounding the larger exit or aperture of the elbow 1 is a pipe or casing 4 of larger size than the diameter of the exit-aperture and forming therewith an annular opening 5. This pipe or casing 4 extends downward some distance beyond the lowermost part of the elbow -l and is closed upon the bottom. This pipe or casing 4 is preferably made in two parts, the lower part 6 forming a pan and the upper part a loose removable ring resting thereon. From the pan 6 and extending to the exterior of the range is another pipe or air-conduit 7. Resting in the pan is a loose sloping or curved plate 8 beneath the elbow and suitably arranged to receive drip or surplus oil falling from the slot or aperture 3. A suitable nozzle 9, adapted to deliver a solid stream of fuel-oil, is provided, so arranged as to throw a solid stream against the inner surface of the curved back of the elbow 1 above the slot or aperture 3. Suitable means for controlling the flow of fuel-oil through the nozzle is provided, (indicated in the present instance as the needle valve and handlewheel 10.)

In operation the fuel-oil under considerable pressure is delivered in a solid needle-like stream against the back curve of the elbow, where it spreads over the surface and is there ignited, heating up the vaporizer. The heat of the elbow gasifies the liquid fuel and being ignited at the aperture burns with a brilliant flame. The oil fed to the elbow is arranged to be slightly in excess of its capability to vaporize, so that a small quantity thereof drops through the aperture 3 onto the plate 8, where it in turn is vaporized and ignited at the annular opening 5, thus heating the elbow. The pipes 2 and 7 supply sufficient air with a sluggish current, and thus, while giving all the air that is necessary to cause complete combustion and avoid deposit of carbon, it is supplied with so gentle a current that it avoids the intense blowpipe action of the spray type burner.

Of course these burners within reasonable limits may be made of any size to suit the various requirements,or they may be multiplied to give extensive surface of flame without increasing the size of the individual units. Valves may be supplied at the entrance of the air-ducts, though I prefer to so proportion these air-inlets that valves are not necessary.

Itis obvious that many changes in the form,

arrangement, and proportion of parts in this burner may be made to adapt it to the extremely varying conditions under which fuel oil is burned. For example, instead of one inclosing casing 4 there may be two or even more such casings, forming more annular openings 5, and there may be a series of plates substantially similar to 8, one below the other, each of which except the lowermost having an overflow-aperture to supply the next lower plate. air-supplying ducts may be changed and modified and the manner of supplying the oil through one of the air-ducts in a single stream may be changed. A number of solid streams may be supplied and many other changes may be made without departing from the essential character of this invention. I therefore do not desire to confine myself to the particular form or proportion of parts herein illustrated, which is simply one convenient form of the invention applicable to a cookingrange; but

What I claim is- 1. A liquid-fuel burner comprising anozzl'e adapted to throw a substantially solid stream of fuel, a substantially elbow-shape vaporizer against the curved back wall of which the nozzle directs the stream of fuel, said vaporizer having a fuel-drip aperture through its curved back wall and means for heating the vaporizer.

2. A liquid-fuel burner comprising a nozzle adapted to throw a substantially solid stream of fuel, a substantially elbow-shape vaporizer against the curved back wall of which the nozzle directs the stream of fuel, said vaporizer having a fuel-drip aperture through its curved back wall and means for heating the vaporizer and a surrounding casing forming a space between it and said vaporizer.

3. A liquid-fuel burner comprisinga nozzle adapted to throw a substantially solid stream of fuel, asubstantially elbow-shape vaporizer against the curved back wall of which the nozzle directs the stream of fuel, said vaporizer having a fuel-drip aperture through its curved back wall and means for heating the vaporizer, the vaporizer being provided with an air-inlet.

4. A liquid-fuel burner comprising a nozzle adapted to throw a substantially solid stream of fuel, a substantially elbow-shape vaporizer against the curved back wall of which the nozzle directs the stream of fuel, said vaporizer havinga fuel-drip aperture through its curved back wall and means for heating the vaporizer and a surrounding casing forming a space between it and the Vaporizer, the surrounding casing. being provided with an airinlet.

5. A liquid-fuel burner comprising a nozzle n adapted to throw a substantially solid stream of fuel, a substantially elbow-shape vaporizer against the curved back wall of which the nozzle directs the stream of fuel, said vapo- The arrangement and location of the rizer having a fuel-drip aperture through its curved back wall and means for heating'the vaporizer and a surrounding casing forming a space between it and the vaporizer, the vaporizer and the surrounding casing being provided with air-inlets.

6. A liquid-fuel burner comprising a nozzle adapted to throw a substantially solid stream of fuel, a substantially elbow-shape vaporizer against the curved back wall of which the nozzle directs the stream of fuel, said vaporizer having a fueldrip aperture through its curved back wall and means for heating the vaporizer and a plate beneath the fuel-drip aperture adapted to receive the fuel dropping therefrom.

7. A liquid-fuel burner comprising a nozzle adapted to throw a substantially solid stream of fuel, a substantially elbow-shape vaporizer against the curved back Wall of which the nozzle directs the stream of fuel, said vaporizer having a fuel-drip aperture through its curved back wall and a surrounding casing forming a space between it and said vaporizer and a plate beneath the fuel-drip aperture adapted to receive the fuel dropping therefrom.

8. A liquid-fuel burner comprising a nozzle adapted to throw a substantially solid stream of fuel, a substantially elbow-shape vaporizer against the curved back wall of which the nozzle directs the stream of fuel, said vaporizer having a fuel-drip aperture through its curved back wall and means for heating the vaporizer, the vaporizer being provided with an air-inlet and a plate beneath the fuel-drip aperture adapted to receive the fuel dropping therefrom.

9. A liquid-fuel burner comprising a nozzle adapted to throw a substantially solid stream of fuel, a substantially elbow-shape vaporizer against the curved back wall of which the nozzle directs the stream of fuel, said vapo rizer having a fuel-drip aperture through its curved back Wall and a surrounding casing forming a space between it and the vaporizer, the surrounding casing being provided with an air-inlet and a plate beneath the fuel-drip aperture to receive the fuel dropping therefrom.

10. A liquid-fuel burner comprising a nozzle adapted to throw a substantially solid stream of fuel, a substantially elbow-shape vaporizer against the curved back Wall of which the nozzle directs the stream of fuel, said vaporizer having a fuel-drip aperture through its curved back wall and. a surrounding casing forming a space between it and'the vaporizer, the vaporizer and the surrounding casing being provided with air-inlets and a plate beneath the fuel-drip aperture adapted to receive the fuel dropping therefrom.

DOSIER H. MOSTELLER.

\Vitnesses:

JEssE- R. EOFF, D. B. RICHARDS. 

